HeartTimer

What it is

HeartTimer is not a typical fitness app. It’s a wellness-focused tracking tool built for environments where time, heart rate, and temperature matter — but attention should stay on the experience.

Whether you’re in a sauna, steam bath, or heated workout, HeartTimer works quietly in the background, keeping you informed without interrupting your flow.

Built for heat

Use HeartTimer in:

• hot tubs
• steam baths
• bio saunas
• hot yoga & hot pilates

No need to constantly check the time. No need to guess your limits.

Stay aware, effortlessly

• track session time
• monitor heart rate
• receive alerts when thresholds are reached

All notifications are haptic and visual — no sound, no distraction. Just subtle feedback when you need it.

Designed for real conditions

In heat and humidity:

• touchscreens become unreliable
• precision drops
• attention is limited

That’s why HeartTimer uses:

• minimal controls
• clear, glanceable interface
• interaction designed for wet hands and sweat

Mark your moments

Create custom markers during your session:

• stepping out of the sauna
• cooling down
• returning back

Build a structured rhythm and review your sessions later with context.

Protect more than your limits

HeartTimer also monitors the temperature of your Apple Watch:

• alerts you when it rises
• warns you before reaching critical levels

Helping you stay safe — and protect your device.

iPhone companion app

Every session is automatically saved and synced to your iPhone, where you can explore:

• full session history
• heart rate and time graphs
• key statistics
• your custom markers

Get a deeper understanding of your patterns, tolerance, and progress — without manual tracking.